Tube flaring tool



Oct. 16, 1934. I w EDEN 1,976,878-

v TUBE FLARING TOOL Filed July 27. 1952' 2 Sheets-Sheet -1 15 Q I Z3 z I 4,? j

- Oct. 16, 19.34.

H. w. EDEN 1,976,878

TUBE FLARING TOOL Filed July 27. 1932 2 Sheets-Sheet 2 V F- l! 15 v 29 1 I m 24 21 f0 1.5

Patented Oct V3, 1934 g UNITED STATES PATENTOFFICE TUBE FLARIN G TOOL Harold W. Eden, Chicago, Ill., assignor to E. Edelmann & 00., Chicago, Ill., a corporation of Illinois Application July 27, 1932, Serial No. 625,184 8 Claims. (01. 153-79) My invention relates to improvements in tube being made to correspond to the desired taper in flaring tools, and particularly to a tool of this the end of the tube to be flared. character intended and adapted for flaring the A tube holding clamp block 13 is revolubly ends of copper, brass, lead, or other soft or exmounted on the base or supporting member 1 6 pansible metal tubes or pipes, preparatory to makby means of a screw 14, or other bearing member ing connection thereof with fittings or other passing through bearing opening 13. This tube parts. Y clamping block is of polygonal form, and in the An object of this invention is to provide a tool present instance is shown as being hexagonal. whichwill take and properly operate upon tubes On each side the clamp block 13 has a recess 15,

10 of various diameters, and which has the parts the several recesses extending substantially thereof so constructed and arranged that all sizes parallel with the axis of rotation of the block of tubes can be operated on with equal efficiency and being semi-circular in cross section. These and facility. recesses are made or formed on a diameter Another object is to so construct the parts that slightly less than the outside diameter of stand- .15 tubes of different sizes can be clamped and held and sizes of tubing, and are preferably grooved positively in position to be operated upon without transversely or otherwise treated to present danger or possibility of denting or otherwise inroughened surface walls. juring the same, and that adjustments for the A slidable tube clamping block 16, similar to. diiferent sizes of pipes can be readily and quickly block 13, is revolubly mounted by a screw or 20 made. other journal member 17 fitted revolubly and With the above and other objects in view, slidably throu h bearing slot 4, and this tube which will be apparent to those skilled in the art, clampin l k 16 h the tube l mpi recess my invention includes certain novel features. of 18 formed th r in in sizes r p n i o h construction and combinations of parts which r c ss s or ro v s 15 of the block 13. The 25 will be hereinafter set forth in connection with mounting screw 1 s o S m w at g ea er l t the drawings. than the thickness of the portion of the base or In the drawings: supporting member 1 through which bearing slot Figure 1 is a view in front elevation of a tool 4 is f rm d, and free s id n and turni m v I constructed in accordance with my invention. ment are thus permitted- To insure at the 30 Fig, 2 is a top plan view with part i 0- block 16 will at all times be in the proper eleva- 35 tion, substantially on line 2-2 of Fig. 1. tion with respect to block 13, a coil spring 19 is Fig. 3 is a longitudinal vertical sectional view fitted to bear between the head of screw 17 and through the structure. s portions of the base or supporting member 1 ad- Fig. 4 is a View in end elevation. jacent bearing slot 4. 35 Fig. 5 is a transverse vertical sectional view. With the arrangement of the pa s as a v Set The baseor supporting member 1, which is of forth tube clamping block 13 is free for revoluelongated form and is provided t a recess 2 ble movementto bring in one of the semi-circular in its middle portmn H a bore or opening 3 on tube receiving notches or recesses to a point cenone side of this notch and a bearing slot 4 on tered below the flaring Point and as Clamping 40 the other side. A bracket arm 5 is extended U001 16 be 511d or moved away m the laterally and upwardlyv at the closed side of 9 block can also be readlly the recess 2 and at the upper end of this arm usted to bring the desired recess 18 thereof into register with a corresponding recess 15 of the an inwardly extending and overhanging portion block 13. When the block 16 is then returned 6 1S provlded' This 'Overhangmg portmn 6 has to the position with its face abutting against the I an @ntemauy Screw-threaded Orifice 7 formed face of the revoluble block 13, the recesses 15 and vertlcany therethrough substantlagny centered 18 of the abutting faces form a circular opening W respect to recess v to receive the end of a tube and center the same A sc ew-threaded S ank 8 1S turned Into the immediately in line with the flaring point 12.

- orifice and at its upper end as a h ad 9 p Means to hold the slidable block 16 in the devid d with a t a sv s p i t r iv ar sired. adjusted osition and to clamp the same 10 by which the screw 8 is turned within the against the tube end is necessary, and to comthreaded orifice 7. On its inner end this screw pensate for the sliding movement of this block 16 8 has a flaring head 11, which on its lower side I provide a clamp arm 20 'at the end of the sup- 55 is of tapered conical form, as at l2,'the taper porting base memberl beyond bearing slot 4,suf-

' arm has an internally screw-threaded orifice 21 formed therethrough to receive clamping screw 22 provided with a wing head 23. While the clamping screw 22 might be made sufficiently long to feed over against the block 16, this would require considerable manipulation and would bring the end of the clamp screw directly into contact with the gripping face of one of the recesses 18. To overcome these objections I provide a pivoted filler block 24 mounted on a bearing ear 25 on the arm 20, and when this flller block is swung back to the opposite side from the position shown in Fig. 2, the tube clamping block 16 can be freely slid and revolved in the bearing slot 4. When proper adjustment of the parts has been made the block 16 is moved toward block 13, and the filler block 24 is then swung to the position shown in Fig. 2 where it is engaged by the clamp screw 22, as the same is turned, and in consequence the tube clamping block 16 will be moved to the proper operative position. If desired, the pin 26 on which the filler block 24 is mounted, can have a spring 27 fitted thereon to compensate for movement of the block during the clamping operation.

It is preferable that the two tube clamping blocks 13 and 16 have diameter indicating markings thereon adjacent the recesses 15 and 18 to thus insure proper setting and registry of the parts for each size of tubing.

In the use of my improved tool the handle or bar 10 is manipulated to withdraw the screw 8 sufliciently that the flaring point 12 will entirely clear and be recessed above the top faces of the blocks 13 and 16. Clamp screw 22 is released sufficiently to permit filler block 24 to be thrown back and the tube clamping block 16 can then be slid out sufficiently to permit free revoluble movement of both of the blocks 13 and 16. These blocks are then adjusted so that the proper grooves 15 and 18 for the particular size of tubing to be operated upon are presented in adjacent faces and the block 24 is returned to the position shown in Fig. 2 to retain this setting of the parts. The end of the tube, as indicated by dotted lines at 28 in Fig. l, is then fitted upwardly through recess 2 and through the clamping jaw formed by the recesses 15 and 18, following which the clamp screw 22 is tightened to cause the piece of tubing to be securely clamped and held in place against endwise movement. As indicated in Fig. 1, the end of the tube 28 is extended above the tops of the blocks 13 and 16 a distance suflicient to make the flare, and when the screw 8 is turned through the threaded orifice 7, the flaring point 12 will be forced into this open end of the tube 28 and will cause the end of the tube to be extended and flared, in a shape corresponding to the conical end 12. It may be found desirable to countersink around the recess 15 and 18 on the upper faces of the blocks 13 and 16 as indicated at 29, to thus accommodate the form of the flare and insure a proper and uniform shape on the outside of the flared portion.

While I have herein shown and described only certain specific embodiments of my invention, it will be appreciated that changes and variations can be made in the form, construction, arrangement and assembly of the parts without departing from the spirit and scope of my invention.

I claim:

1. A flaring tool comprising a supporting member, a flaring screw carried at a. fixed position upon said supporting member, a clamp block revolubly carried on said supporting member, a second clamp block revolubly and slidably carried by said supporting member, said clamp blocks being provided with cooperating tube clamping grooves to form tube receiving and clamping openings centered with respect to the flaring screw, and means to secure said clamping blocks together in tube clamping relation.

2. A tube flaring tool comprising a supporting structure having a tube receiving recess, a flaring screw movable toward and from said recess, a clamp block revolubly mounted on said supporting structure to overhang said recess and provided with tube clamping grooves in its periphery, a second tube clamping block revolubly mounted on said supporting structure. and also slidably and bodily movable toward and away from said first-mentioned block, said second tube clamping block haying tube clamping grooves therein to cooperate with the grooves of said firstmentioned block, and means to secure said blocks together in tube clamping relation with the tube clamping recess substantially in line with the flaring screw.

3. A tube flaring tool comprising a supporting structure having a tube receiving recess, a flaring screw movable toward and from said recess, a clamp' block revolubly mounted on said supporting structure to overhang said recess and provided with tube clamping grooves in its periphery, a second tube clamping block revolubly mounted on said supporting structure and also slidably and bodily movable toward and away from said first-mentioned block, said second tube clamping block having tube clamping grooves therein to cooperate with the grooves of said first-mentioned block, and a clamp screw associated with the supporting structure to secure said blocks together in tube clamping relation with the tube clamping recess substantially in line with the flaring screw.

4. A tube flaring tool comprising a supporting structure having a tube receiving recess and provided with a bracket arm extending adjacent said recess and provided with a screw threaded oriflce, a flaring screw received in said threaded orifice to work toward and away from said recess, a tube clamping block of polygonal form revolubly mounted on said supporting structure on one side of said tube receiving recess with its periphery overhanging and provided in the several faces with tube clamping grooves of various diameters substantially centered with respect to said flaring screw, a second tube clamping block of similar form revolubly and slidably mounted on said supporting structure on the opposite side of the tube receiving recess thereof, and means to move said slidably mounted clamping block toward said revolubly mounted block and secure the same in a tube clamping relation.

5."A tube flaring tool comprising a supporting structure having a tube receiving recess and provided with a bracket arm extending adjacent said recess and provided with a screw threaded oriflce, a flaring screw received in said threaded orifice to work toward and away from said recess, a tube clamping block of polygonal form revolubly mounted on said supporting structure on one side of said tube receiving recess with its periphery overhanging and provided in'the several faces with tube clamping grooves of various diameters substantially centered with respect to said flaring screw, a second tube clamping block of similar form revolubly and slidably mounted on said supporting structure on the opposite side of the tube receiving recess thereof, and a clamp screw associated with said supporting structure to move said slidably mounted clamping block toward the revolubly mounted block and secure the same in tube clamping relation.

6. A tube flaring tool comprising a supporting structure having a tube receiving recess and provided with a bracket arm extending adjacent said recess and provided with a screw threaded orifice, a flaring screw received in said threaded orifice to work toward and away from said recess, a tube clamping block of polygonal form revolubly mounted on said supporting structure on one side of said tube receiving recess with its periphery overhanging and provided in the several faces with tube clamping grooves of various diameters substantially centered with respect to said flaring screw, a second tube clamping block of similar formrevolubly and slidably mounted on said supporting structure on the opposite side of the tube receiving recess thereof, a bracket arm associated with said supporting structure on the'outer side of said slidably mounted clamp block, a clamp screw associated with said bracket arm, and a movably mounted filler block to be said flaring screw.

8. A tube flaring tool comprising a rigid supporting member, a flaring screw carried at a fixed position on said supporting member, a pair of clamping blocks carried by said supporting structure each having a plurality of tube clamping grooves of various diameters and rotatably associated to allow adjustment for mating registration of corresponding grooves to form a tube receiving opening centered with respect to the flaring screw, and means to secure said clamping blocks together in tube holding relation.

HAROLD W. EDEN. 

